Product-selling parties (like Mary Kay cosmetics demonstrations and those dildo parties that women always seem to be having in zany romantic comedies) are traditionally harmless reminders of how little your friends actually value your company. However, hosting one of the following parties would be nothing less than a hero's trial, as it would be difficult enough to admit to your friends that you own these products, let alone convince anyone to purchase them for themselves.
4Taser/Stun Gun Parties
DivaDefender allows you to host your very own Taser party, gathering together a group of your irrationally paranoid friends to demonstrate the finer points of shocking the bejesus out of any minority bold enough to approach them in the street.
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"He said he needed directions to the mall, but I'm pretty sure that was some kind of gang code, so I let him have it!"
There are stun guns shaped like lipstick, pink cellphones that deliver 4.5 million volts of neuromuscular impairment, and 16-inch steel batons with holsters (which are slightly less subtle, but ordering one in pink probably isn't out of the question).